Automatic machine for drilling, reaming, etc.



March 2, 1943.

P. MANN 2,312,922) AUTOMATIC MACHINE `FOR DRILLING, REAMING, ETC

Filed ot, 5, '1941. s'sheets-she'et 1 l '106 (1 '102 10M A 1 C g A(9 4 9 C42' a W. Y l 4l A .lv v' w w I" 1, 04

"my D@ '-30 l? 'u' March 2, 1943. P MANN 2,312,922

AUTOMATIC MACHINE 4FOR DRILLING; REAMING, ETQ

Filed oct. s, 194i y5 sheets-sheet 2 42 l 03 oz zal ma 9 42 f 39 102 .4l .5'.3 "mf ii H H '97 46 n 4 4s" 46 v March 2,1943.' P. MANN y 2,312,922

AUTOMATIC MACHINE FOR DRILLING, REAMING, ETC

'C ua 1| BY 2; ATToRNEY March 2, 1943.- P. MANN Y 2,312,922

AUTOMATIC-MACHINE FOR DRILLING, REAMING, ETC

Filed oct. s, 1941 5 sheeis-seet 4 (g2g 0d" 3- I I 0 ll d 1&5 p

Y' l M l f'/ 731 @L ,u WH0 af 1 4k INVENTOR v 45 A F55' .5.

March 2, 1943. P, MANN AJTOMATIC MACHINE FOR DRILLING, REAMING, `ETC 5 Sheets-Sheet 5 Filed oct. 3, 1941l ENToR l Maru;

Patented Mar. 2, 1943 OFFICE.

AUTOMATIC MACHINE FOR DRILLING, REAMING, ETC.

Philip Mann, Dover, N. J.

Application October 3, 1941, Serial No. 413,395

1l Claims.

This invention relates to new and useful improvements in an automatic machine for drilling, reaming, burring, tapping, and performing other similar operations on al1 sizes and shapes of small pieces of work with particular adaptability for those which must now be done by hand operations.

The invention contemplates the construction of a machine as mentioned which is characterized by a frame having a transverse rail system slid-` ably mounted thereon, and also having a longitudinal rail system slidably mounted thereon, and

a work supporting platform mounted on said rail systems soas to be capable of moving transversely and longitudinally, as desired.

The invention further contemplates the provision of adjustable support means for a gang of tools, said means being mounted on said frame, and said tools are cooperative with a piece of work mounted on said supporting platform Still further the invention contemplates the provision of a supply chute, a discharge chute, and holding means mounted on said work supporting platform for supplying, holding and discharging the Work as required.

Still further resilient means is proposed for urging the work supporting platform transversely to a starting point; additional resilient means is proposed for urging said work supporting platform longitudinally to a starting point, and a novel mechanism is also provided for successively moving said platform into and from certain position in which the gang of tools may individually or collectively perform on the work.

Still further an oil tray and an oil circulating system is proposed to supply the gang of tools with the necessary lubrication during the operation of the machine.

For further comprehension of this invention, and of the objects and advantages thereof, ref? erence will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. l is a side elevational View of an automatic machine constructed in accordance with this invention.

Fig. 2 is a plan view of the machine shown in Fig. 1.

Fig. 3 is a transverse enlarged vertical sectional view taken on the line 3 3 of Fig. 2.

Fig. 4 is a fragmentary enlarged verticalv sectional view taken on the line 4 of Fig. 2.

5 the slide 24.

Fig. 5 is a fragmentary horizontal sectional view taken on the line 5 5 of Fig. 4.

Fig. 6 is a fragmentary horizontal sectional view taken on the line 6,-5 of Fig. 7.

Fig. 'l is a fragmentary vertical sectional View taken on the line 1-1 of Fig. 5.

Fig. 8A is a fragmentary enlarged vertical sectional view taken on the line B--B of Fig. 2.

Fig. 9 is a fragmentary horizontal sectional view taken on the line 9-9 of Fig. vS. y Fig. 10 is a fragmentary elevational View looking'in the direction of the line I-I fof Fig. 7.

Fig. 11 is a fragmentary horizontal sectional view taken on the line II--II of Fig. 7.

of Fig. '7.

Fig.. 13 is a perspective detail view of apart n used in the device.

Fig. 14 is a perspective View of another member for releasing the follower in thisdevice. Y

Fig. 15 is a horizontal sectional View of one of the needle valves, per se.

The automatic machine, in accordance with this invention, includes a rectangularv frame I5. A transverse rail system I5, seeFigs. 2 and 6, is slidably mountedto move longitudinally on said frame I5. This rail system comprises a pair of spaced rails I'I and I8 disposed transversely of 1 dinal rail system 23, see particularly Fig. 6. This longitudinal rail system includes a slide 24 slidably mounted in a groove 25 formed in one of the transverse sides lof the frame I5. A pair of rails in the form of tubes 2S and 21 project from These tubes yextend out from a slot 28 formed in the latterv mentionedside wall of the frame I5. 'Ihe arrangement is such that the longitudinally extending rail system 23 may move transversely inthe frame I5.

A work support platform 3i] is mounted on the said rail systems I6 and 23 so as to be capable of moving transversely and longitudinally. More specifically, the rails I'I andV I 8 of the rail system I6 pass through complementaryv openings 3| formed in the platform 3Q. vThe rails 25 and Fig. 12 is a fragmentary enlarged detailed View Each of the" 21 engage into complementary receiving openings 32 extended inwards from one of the sides of the platform 30 and terminating a short distance from the other side of the platform.

A pair of rails 33 project from the latter mentioned side of the platform 30 and are engageable with tubular support sockets 34 mounted on the frame l5. More particularly, there are a plurality of the sockets 34 each of which is provided with a pair of screws 35i extending through slots 36 formed in a transverse support plate 31V mounted on the frame I5.

Each screw 35 is provided with a wing nut 38 by which it may be tightly clamped in position. The arrangement is such that the wing nuts y 38 may be loosened and then the tubular sockets 34 may be shifted transversely in the frame I5 so as to properly line up with the rails 33 during the operation of the work supporting platform 39, as will become clear as this specification proceeds. It should be clear, Vat this time, that the work support platform 38 is capable of moving to various transverse positions on the rail system I6, and is capable of moving to various longitudinal positions on the rail system 23.

Adjustable support means is provided for a gang of tools l39 which may be drilling, boring, and the like tools. This adjustable means is mounted on the frame I so that the tools may be cooperative with a piece of work mountedon the supporting platform 38. More specifically, the adjustable support means for the gang of tools 39 includes a platforml 48 which is supported by a pair of vertical screws 4| rotatively mounted in brackets 42 which are mounted on the frame I5. The screws 4| threadedlyengage the platform 40. The screws 4I are provided with beveled gears 43 which mesh with beveled gears 44 on rotatively supported shafts 45. The shafts 45 aremounted in bearings 46 which are mounted on-the bottom of the plate 31.

4The shafts 45are also provided with beveled gears 48 which mesh with a beveled gear 49 on a drive shaft 50.- This drive shaft` 50is rotatively supported in a bearing 5| mounted on the bottoml ofthe plate 31. The drive shaft 59 is provided with a square outerend 52 adapted to be engaged by a Vturning tool for indirectly causing turningof thescrews 4| which will raise or lower the platform 40, depending upon the direction in which the screws are turned.

. The platform 48 supports a. vplurality of runners 53 extending longitudinally of the frame I5 and guiding blocks 54-upon which the tools 39 are .rotatively mounted. Each tool 39 is providedlwith a pulley 55 b-y -which theymay .be driven. The drive means will not be disclosed .in this specification asit forms no part ,of the invention. 4vEach block 54 may be longitudinally adjusted.v Each block V54 is provided with a screw 56 threadedly engaging the block andv rotatively .mounted on the platform 40.` One end of each screw ..58 is supported in a projecting lug 51I from the platform 49, while the otherend is supported by a bearing 58 mounted on the platform 40. Each screw 58'hasa square head 59 adapted to receive .a turning tool by which the screw may be turned to indirectly move the tool 39 forwards and rearwards.` as desired.

Resilient means is provided for urging the supporting platform 38 transversely to a starting position.- `This resilient means consists of a pair of springs 60 attached to the slide I9 and extending into bores 6| formed inthe platform 30.

The other ends of these springs 60 are attached by holding members 82 to the remote sides of the said platform 3U. Additional resilient means is provided for urging the said work supporting platform 30 longitudinally to a starting position. This resilient means comprises a pair of springs 83 attached at one of their ends upon the slide 24 and extending into bores 64 formed in the platform 39.

The springs 63' have their inner ends secured to fastening means 95 mounted on the remote side of the platform 39. More specifically, the action of the resilient means is such that the platform 30 is'normally urged into the corner of the frame I5 in which it is illustrated in Figs. 2, 5 and 6. The frame I5 is provided with several inwardly projecting flanges 65 formed upon the inner sides thereof and forming abutments against which the platform 39 engages. The springs 63 are stronger than the springs 60 because they must pull the platform and work free from the tools.

The platform 30 is provided with a rack 61 which extends longitudinally thereof. A gang of driven segmental gears 58 are cooperative with this rack |514 to ,move the platform 30 longitudinally when the platform is located at certain transverse positions. Each of the segmental gears V68 is mounted on a shaft 69 which extends transversely of the frame l5. This shaft 69 connects with a speed control transmission 19 which is provided with a pulley 1| engaged by a driver belt or chain 12 operated b-y some prime mover not illustrated on the drawings. i

Means is provided for moving and holding the platform 38 in succession in the -said certain transverse positions. Said moving and holding means includes'a screw 13 rotatively supported transversely of and on the frame I5. This screw 13 is continuously turned by a sprocket wheel 14 which is mounted on one end of the screw and is engaged by a chain 15 connected with a.

speed transmission means 16 driven by the shaft 69. A follower 11 is adjustably mounted on the bottom of the platform 39. This follower is mounted on a slide 18 which is slidably mounted in a, complementary receiving groove 19 formed in the bottom portion of the platform 39.

The follower." has a curved threaded side 89 whichis adapted to-engage the threads of the screw 13 to transmit a transverse movement to the platform 39. A tension spring 3|a acting be# tween the follower 11 and the platform 39 normally holds the follower 11 in an inoperative position. A latch device is provided for holding the follower 11 an operative position with the threaded side 89 engaging the screw 13. This latch device includes a rod 8| pivotally mounted at one end on the bottom of the platform 30 and extending through a large opening 82 formed in the follower 11. A bolt 83 is pivotally mounted by a pintle 84 upon the rod 8|. The bolt 83 has a projecting nger 85 which will engage against the top of the rod 8| when the bolt 83 moves slightly downwards into its operative position. As illustrated in Fig. 12 it is now inoperative.

y The free end of the rod 8| rests upon a rail 86 which is supported by bolts 81 on the frame I5.

VThis rail 85 extends the entire transversevwidth follower 'I1 into its operative position. Thismay be best understood by examining Figs. '7, l1 and 12. When the segmental gear 6B drives the platform 30 towards the right the projection 'I'Ia will strike the bar 89 at the instant that the platform 39 reaches the end of its motion to .the right. This engagement will move the follower 'I'I towards the left against the action of the spr-ing 8| a. The bolt 83 moves downwards under the influence of gravity and gets behind the follower I'I to hold it in its new position, which represents its operative position, against the action of the spring Bla.

When the platform 33 next reaches, its extreme left position the follower 'I'I will engage the screw 13 which will move the platform 30 transversely, that is, downwards in relation to Fig. 2. The platform 3D will continue in this di-y rection until the free end of the rod 8| rides over one of the cam projections 88. This lifts the rod 8| so as to lift the depending bolt 83 above the bottom 4of the opening 82. The follower 'il' is now free and will be moved to its inoperative position by the spring Bla, that is, to the position illustrated in Fig. 12. The platform 30 now stops moving transversely. It is now in a position in which another one of the segmental gears B3 can and does engage the rack 6l of the platform 39, and starts moving the platform 39 towards the right. The platform 39 will retain the various transverse positions into which it is moved by the follower TI engaging the screw I3 by a certain retaining means.

The retaining means referred to above includes ratchet teeth 99 formed upon one side of the slide 24, see particularly Fig. 6, and engaging a complementary ratchet tooth bar 9|. This bar 9| has its ends 9 |a projecting from the frame I5. Springs 92 act between brackets 93 mounted on the frame I5 and the ends 9|il to urge the bar 9| into operative position. The constructionis such that while the platform 3|) moves from its starting point to various positions as controlled by the screw 13 and the follower l'l, the rack bar 9| will move against the action of the springs 92 to permit the platform Silto move as stated. However, the springs 60 cannot return the platform 30 because of the holding action of the rack bar 9|.

Means is provided for releasing the rack bar 9| `at a certain time so that the springs IIl may return the platform 3i) `to its starting point. This means includes pulleys 95 rotatively mounted on the sides of the frame I5 and carrying cams 9,5, These cams are adapted to strike the endsl 9 ISL andv cam the rack bar 9| laterally to free it from the rack teeth 90 so that the platform 39 is free to move back to its starting position. The

pulleys 95 are turned by endless chains or belts 9B which are operated by a transmission means 91 operated by the shaft 69.

A dashpot mechanism is provided to prevent theplatform 35 Afrom traveling too rapidly ti. wards the left when the segmental gears 93 dis# engage from the rack 61. This dashpot means is in the nature of a dashpot piston and cylinder action. The tubes 26 and 2l comprise the pistonsworking in the bore 32 which act as the cylinders. The tubes 2b and 21 are provided with needle valves 39 which may be regulated to control the passage of air. The needle valves 99 are adjusted to control the rate at- Y which the entrapped within the tubes and bores will be expelled when the platform 39 moves towards the left under the influence of the springs S3 causing the tubes to reenter the bores.

iii)

In this way the cushioning; Yeffect is produced. The frictio-nal resistance of:` thetracks Il and I3 working in .the openings3| is depended upon to control the return ofA the platform 39 to its transverse starting; position under the action of the` springs 69.

An oilpa-n |00 is mounted beneath the frame I5 and projects past the sides of the frame. An oil supply pipe |.0| extends overV the gang of tools 39 and has individual discharge branches HL2- which are individually controlled by cocks |03. An oil pump |64 isl arranged in the oil line I9I and is for the purpose of pumping oil or other liquid from the oil pan |39 to the various branches '|92 to discharge against the gang of tools 39. One or more of the branches |92 may be shut oi'by-the cocks |93, when desired. The oil discharged by these branches will be caught by the pan |39 and recirculated by the pump |94. TheV platform 39 is provided with a work holding bracket |95. A supply chute |95 for the work connects with the bracket |95. A discharge chute |31 is alsov connected with the bracket |535. A work discharge means is associated with the bracket |95 and'- comprises a member its which is turnably mounted by a pintle |99 on the side of the bracket |95. Thisl member |98 supports a plurality of holding lingers I'Iil. Each of these fingers I I9 engages through a socket I I which is provided with a set screw H2, by which the iingers may be properly adjusted. The heads |I 9 of the fingers H9 pass through a groove ,IIS formed in the bracket |05. Normally, oneof the fingers l!! holds a piece of work, indicated in Fig. 7 by the numeral II5.

v Means is providedy for operating the discharge.

means which includes Va vertical finger I i3 mounted on a'pintle III and held in vertical position by a. spring Il8. The finger IIB normally engages against one endof a slot |29 formed in the top of the frame l5. The arrangement is such thatv when theplatform 39 passes downwards, in rela tionto they illustration in. Fig. 5, one of the fingers Iiil will strike the finger Hpivoting it down-- wards Aso that the work discharge means merely idles past. These ngers may be changed depending lon shape and size ofv pieceto be worked on. i Y 1 Thus, the piece of work II5 is being held during thev operation of the gang of tools 39 on it. However, when the platform 3Q returns to its starting position one of the fingers E9 will strike the :linger IG in the opposite direction. In this direction the finger IIB cannot lay down into the `slot H9, and consequently the disc |98 will be turned. During the turning of the head III),

one of the` fingers III) which is holding the work;

[I5 will Amove the work towards thedischarge |01, and a short time lateran adjacent head I Ilil will catch and hold theneXt piece 'of work IIS which moves down in the supply chute |06.

A bar |29 is mounted across the frame I5 beneath the rails 33 to assist in supporting these rails.

The operation of the device is as follows:

The platform 3|! starts from the position illustrated in Fig. 2. The first segmental gear 63 ismes-hing with therack Sl of the platform 3.9. The shaft E9 starts rotating so that the segmental gear 68 moves the platform 3Q longitudinally to engage the work supported on the platform 39 against the first tool 39.

When the. platform 30 reaches the end of itsv motion towards the first tool 39, the projection 'I 'I of the; follower TI will engage a removable projection 89i of the bar 89 forcing the follower 1T towards the left, as illustrated in Fig. '7, which is the operative position. The bolt 83 immediately acts to hold the follower 11 in this position. Then the segmental gear 68 releases the platform 30 which is then returned to its left hand position by the springs 63. When it reaches its left hand position the follower 'l1 engages the screw 'I3 which moves the platform 30 transversely until the rod 8| rides upon the first cam projection 88 of the rail 86. This lifts the-bolt 83 above the bottom of the openings 82 in the follower l'l, releasing the follower which is moved out of contact with the screw 13 by the spring 8l.

' At this instant the second one of the segmental gears 68 comes into mesh with the rack 61 of the platform 30 to move the platform 30 again towards the right to engage the work supported on the platform 30 against thesecond tool 39. The operation keeps repeating until the cams 96 engage the ends 9|EL of the ratchet rod 9i. The ratchet rod 9| is then moved and releases the slide 24, whereupon the springs 60 return the platform 30 transversely to its starting position. i In Fig. 13, the segmental gear 68 is shown with a cam 68a which is adaptedV tov engage the free end of the rod 8l for moving the follower 11 to .engaging position with the screw'13. Y

The cam 68a may be secured to or removed from the segmental gear 68' to permit the platform 38 to be moved by the screw 'I3 when desired.

In Fig. 14 an individual release projection 88a is shown at the end of the bolt 81 which may be spaced at various positions for releasing the lock device of the follower 'I1 from screw 13.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the inventionas defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. An automatic machine for drilling and roaming, comprising a rectangular frame, a

transverse rail system slidably mounted on said f frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustablersupport means for a gang' of tools and mountedzon,

said frame to be cooperative with a piece ,ofx'work mounted on said supporting platform, resilient' means urging said work `supporting platform transversely to a starting position, resilient means urging said work supporting platform vllongitudinally to a starting position,v a 'racls'n Vsaid platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions,V

and means for releasing said platform. Y

2. An automatic machine for drillingY and reaming, comprising a rectangular frame, a

transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said-frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and' mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means'for moving and holding said platform in succession at said certain transverse positions, and means forv releasing said platform, said transverse rail system comprises a slide slidably mounted on theframe and having projecting rails.

3. An automatic machine for drilling and reaming, comprising a rectangular frame, Va transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movabley transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally tov certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions, and means for releasing said platform, said longitudinal rail system comprises a slide slidably mounted on the frame and having projecting rails.-

4. A automatic machine for drilling and reaming comprising a rectangular frame, av transverse rail system slidably mounted on said frame, Aa longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and o longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with `said rack to move said platform longitudinally4 to certain transverse positions, means for moving and holding said platform in succession yat said certain transversepositions, and means lfor Ireleasing said platform, said longitudinal railfsystem comprises a slide sl-idably mounted on the frame and having projecting rails, and supplementary supporting rails projecting from said platform and engageable in tubular sockets adjustably mountedin relation with said frame.

5. An automatic machine for drilling and ream-` ing', comprising a rectangular frame, a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said.

Work supporting platform transversely to a start-v ing position, resilient means urging said work supplatform, said work supporting platform being provided with a supply chute, a discharge chute, and means for discharging the work.

6. An automatic machine for drilling and reaming, comprising a rectangular frame, a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions, and means for releasing said platform, said adjustable support means comprises a platform, means for vertically adjusting said platform, runners on said platform, blocks for supporting said tools adjustably mounted on said runners, and means for moving said blocks into selected positions.

7. An automatic machine for drilling and reaming,comprising a rectangular frame,a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said Work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental ears cooperative with said rack to move said platform longitudinally to certain transverse psitions, means for moving and holding said platform in succession at said certain transverse positions, and means for releasing said platform, said resilient means comprising springs attached to said rail systems and extending into bores formed in said platform and having their remote ends connected with the platform.

8. An automatic machine for drilling and reaming, comprising a rectangular frame, a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions, and means for releasing said platform, said means for moving and holding said platform includes a rotative screw, a follower engageable with said screw, means for engaging said follower with the screw, means for disengaging the follower from the screw, a ratchet system for holding the platform so that it may lmove freely in one direction only, and means for discharging said ratchet system.

9. An automatic machine for drilling and reaming comprising a rectangular frame, a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient mea-ns urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions, means for releasing said platform, and an oil tray beneath a gang of tools supported by said adjustable support means, and a circulating system for the oil to the .various tools.

10. An automatic machine for drilling and reaming, comprising a rectangular frame, a transverse rail system slidably mounted on said frame, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable transversely and longitudinally, adjustable support means for a gang of tools and mounted on said frame to be cooperative with a piece of work mounted on said supporting platform, resilient means urging said work supporting platform transversely to a starting position, resilient means urging said work supporting platform longitudinally to a starting position, a rack on said platform, a gang of driven segmental gears cooperative with said rack to move said platform longitudinally to certain transverse positions, means for moving and holding said platform in succession at said certain transverse positions, and means for releasing said platform, said means for moving and holding said platform includes a rotative screw, a follower engageable with said screw, means for engaging said follower with the screw, means for disengaging the follower from the screw, a ratchet system for holding the platform so that it may move freely in one direction only, and means for discharging said ratchet system, said means for engaging said follower with said screw includes a projection from said follower engageable with a stationary bar at the moment that the platform reaches its extreme longitudinal position.

ll. An automatic machine for drilling and reaming, comprising a rectangular frame, a transverse rail system slidably mounted on said iframe, a longitudinal rail system slidably mounted on said frame, a work supporting platform mounted on said rail systems to be movable tra-nsversely and longitudinally, adjustable support means for a gang of tools and mounted on said for releasing said platform, and an oil tray beneatha gang of tools supported by said adjustable support means, S7and a circulating system for the oil to the various tools, said means for disengaging the follower lfrom the screw comprises resilient means urging the follower to a disengaged position, a latchrfor holding the follower in its engaged position, and a cam for moving said latch to an inoperative position.

PHILIP MANN. 

